Microsoft OLE DB Provider for ODBCTo an ADO or RDS programmer, an ideal world would be one in which every data source exposes an OLE DB interface, so that ADO could call directly into the data source. Although increasingly more database vendors are implementing OLE DB interfaces, some data sources are not yet exposed this way. However, most DBMS systems in use today can be accessed through ODBC. ODBC drivers are available for every major DBMS in use today, including Microsoft SQL Server, Microsoft Access (Microsoft Jet database engine), and Microsoft Fox. Pro, in addition to non- Microsoft database products such as Oracle. The Microsoft ODBC Provider, however, allows ADO to connect to any ODBC data source.

The provider is free- threaded and Unicode enabled. The provider supports transactions, although different DBMS engines offer different types of transaction support. For example, Microsoft Access supports nested transactions up to five levels deep. This is the default provider for ADO, and all provider- dependent ADO properties and methods are supported. Connection String Parameters To connect to this provider, set the Provider= argument of the Connection.

Extensible Storage Engine (ESE), also known as JET Blue, is an ISAM (indexed sequential access method) data storage technology from Microsoft. ESE is the core of.

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String property to: MSDASQL. Reading the Provider property will return this string as well. Typical Connection String A typical connection string for this provider is. Because this is the default provider for ADO, if you omit the Provider= parameter from the connection string, ADO will try to establish a connection to this provider.

Note If you are connecting to a data source provider that supports Windows authentication, you should specify Trusted. The provider does not support any specific connection parameters in addition to those defined by ADO.

However, the provider will pass any non- ADO connection parameters to the ODBC driver manager. Because you can omit the Provider parameter, you can therefore compose an ADO connection string that is identical to an ODBC connection string for the same data source. Use the same parameter names (DRIVER=, DATABASE=, DSN=, and so on), values, and syntax as you would when composing an ODBC connection string. You can connect with or without a predefined data source name (DSN) or File.

DSN. Syntax with a DSN or File. DSN. In Microsoft Windows 2. ODBC Administrator is located under Administrative Tools. In earlier versions of Windows, the ODBC Administrator icon is named 3. ODBC or just ODBC.

As an alternative to setting a DSN, you can specify the ODBC driver (DRIVER=), such as . You can also specify a user account name (UID=), and the password for the user account (PWD=) in the ODBC- specific parameters or in the standard ADO- defined user and password parameters. Although a DSN definition already specifies a database, you can specify adatabase parameter in addition to a DSN to connect to a different database. It is a good idea to always include thedatabase parameter when you use a DSN.

This will ensure that you connect to the correct database if another user changed the default database parameter since you last checked the DSN definition. Provider- Specific Connection Properties The OLE DB provider for ODBC adds several properties to the Properties collection of the Connection object. The following table lists these properties with the corresponding OLE DB property name in parentheses. Property Name. Description.

Accessible Procedures (KAGPROP. For a listing of function names and the associated values used in this bitmask, see Appendix E: Scalar Functions, in the ODBC documentation. Outer Join Capabilities (KAGPROP.

For a listing of function names and the associated values used in this bitmask, see Appendix E: Scalar Functions, in the ODBC documentation. System Functions (KAGPROP. For a listing of function names and the associated values used in this bitmask, see Appendix E: Scalar Functions, in the ODBC documentation.

Time/Date Functions (KAGPROP. For a listing of function names and the associated values used in this bitmask, see Appendix E: Scalar Functions, in the ODBC documentation. SQL Grammar Support (KAGPROP. The following table lists these properties with the corresponding OLE DB property name in parentheses. Windows Cannot Update Error Code 80072Efe Fix more. Property Name. Description.

Query Based Updates/Deletes/Inserts (KAGPROP. ODBC provides a specific syntax for calling stored procedures. For the Command. Text property of a Command object, the Command. Text argument to the Execute method on a Connection object, or the Source argument to the Open method on a Recordset object, passes in a string with this syntax: ? The parameter references are optional and depend on the structure of the stored procedure.

If you want to call a stored procedure that defines no parameters, your string would look like the following: ? If you have no query parameters but you do have a return value, your string would resemble the following: ?

For more detailed information about Recordset behavior for your provider configuration, run the Supports method and enumerate the Properties collection of the Recordset to determine whether provider- specific dynamic properties are present. Availability of standard ADO Recordset properties: Property. Forward. Only. Dynamic. Keyset. Static. Absolute.

Pagenot availablenot availableread/writeread/write. Absolute. Positionnot availablenot availableread/writeread/write. Cartouche Feel The Groove Downloader. Active. Connectionread/writeread/writeread/writeread/write. BOFread- onlyread- onlyread- onlyread- only. Bookmarknot availablenot availableread/writeread/write. Cache. Sizeread/writeread/writeread/writeread/write.

Cursor. Locationread/writeread/writeread/writeread/write. Cursor. Typeread/writeread/writeread/writeread/write. Edit. Moderead- onlyread- onlyread- onlyread- only. Filterread/writeread/writeread/writeread/write. Lock. Typeread/writeread/writeread/writeread/write.

Marshal. Optionsread/writeread/writeread/writeread/write. Max. Recordsread/writeread/writeread/writeread/write. Page. Countread/writenot availableread- onlyread- only. Page. Sizeread/writeread/writeread/writeread/write. Record. Countread/writenot availableread- onlyread- only. Sourceread/writeread/writeread/writeread/write. Stateread- onlyread- onlyread- onlyread- only.

Statusread- onlyread- onlyread- onlyread- only The Absolute. Position and Absolute. Page properties are write- only when ADO is used with version 1. Microsoft OLE DB Provider for ODBC. Availability of standard ADO Recordset methods: *Not supported for Microsoft Access databases.

Dynamic Properties The Microsoft OLE DB Provider for ODBC inserts several dynamic properties into the Properties collection of the unopened Connection, Recordset, and Command objects. The following tables are a cross- index of the ADO and OLE DB names for each dynamic property. The OLE DB Programmer's Reference refers to an ADO property name by the term, . Search for the OLE DB property name in the Index or see Appendix C: OLE DB Properties. Connection Dynamic Properties The following properties are added to the Connection object's Properties collection. ADO Property Name.

OLE DB Property Name. Active Sessions. DBPROP.